Description
The Ohaus PR224/E is a PR Series analytical balance offering accuracy and repeatability for essential weighing applications in laboratory, industrial, and education settings, delivering competitive performance at an economical price. It features RS232 connectivity for easy communication, a backlit display, and a simple interface for uncomplicated operation. The balance is suitable for basic weighing, parts counting, and percent weighing.
Features:
- ABS top housing, removable stainless steel pan, removable glass draftshield with sliding top door, integrated weigh-below-hook, security bracket, and calibration lock: Durable, easy-to-clean construction that protects sensitive measurements from drafts, secures the unit against tampering or theft, and supports below-balance weighing for irregularly shaped or hanging samples.
- User-selectable environmental filters and brightness settings, auto-tare, and auto-dim: Lets the operator tune the balance’s sensitivity to vibration or air currents for a more stable reading, automatically zero out container weight, and reduce display brightness during idle periods to save power and reduce glare.
- User-selectable span calibration points, software lockout and reset menu, and user-selectable communication settings and data print options: Gives administrators control over calibration accuracy points, restricts unauthorized changes to settings, and allows customization of what data (weight, IDs, timestamps, etc.) is sent to a printer or computer.
- User-definable project and user IDs, software overload/underload indicator, and stability indicator: Supports traceability by tagging weighing results to specific users or projects, while on-screen alerts flag when a sample exceeds capacity, falls below range, or hasn’t yet settled into a stable reading.
- Three essential weighing modes with RS-232 connectivity for data transfer and storage: Covers the core functions most labs need (weighing, parts counting, percent weighing) and allows direct data transfer to a PC, printer, or POS system for recordkeeping.
- Simple four-button keypad with intuitive navigation and a large, bright backlit display: Minimizes the learning curve for new operators and keeps the display legible even in low-light lab or industrial settings.
- External calibration: Calibration is performed manually using external certified weights rather than an automatic internal mechanism, which keeps the unit cost-effective but requires the operator to periodically calibrate by hand.
Specifications:
- Maximum Capacity: 220 g
- Readability: 0.0001 g
- Repeatability (typical): 0.0001 g
- Linearity: ± 0.0002 g
- Minimum Weight (USP, 0.1%, typical): 200 mg
- Stabilization Time: 3–4 s
- Pan Size: 3.5 in (90 mm), Stainless Steel
- Calibration Type: External
- Display: LCD with backlight
- Communication: RS232
- Tare Range: To capacity by subtraction
- Units of Measurement: Milligram, Gram, Ounce, Carat, Pennyweight, Ounce Troy, Newton, Grain, Taiwan Tael, Custom
- Overall Dimensions (H x L x W): 11.9 in x 12.5 in x 7.9 in (303 mm x 317 mm x 201 mm)
- Net Weight: 10 lb (4.5 kg)
- Power: AC Adapter (included)
- Operating Environment: 50°F–86°F, 80%RH, non-condensing; operability guaranteed between 41°F and 104°F (10°C–30°C)



